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As part of their investigation, officers analysed CCTV which showed 18-year-old Jayden Mannion-Robertson and fellow street dealer Kassim Hussain, 20, passing wraps to drug addicts known to detectives.

Both men were arrested and were found to be in possession of both heroin and crack cocaine and teenager Mannion-Robertson was found carrying a large sum of cash.

Now the pair have been sent to a young offender’s institution for a combined total of more than five years after admitting their crimes.

Jayden Mannion-Robertson (Image: Derbyshire Live)

Judge Shaun Smith QC said: “You are both still young me but both of you have shown a willingness to supply class A drugs.

“Drugs that bring misery to many may people.

“Not just to these people who take them but also to their families and to the victims of the crimes they go out to commit because they are on drugs or they need the money to buy drugs from people like you.

“You are not at the top of the tree, you are the ones that get caught because you are street dealing.

“Jayden Mannion-Robertson, your position is significantly aggravated because this is your third conviction for selling drugs in a short space of time.

Kassim Hussain (Image: Derbyshire Live)

“Kassim Hussain, you are just 20 years old and I have read your letter and one from your sister.

“They say you are finding prison particularly difficult but it is impossible to send you anywhere other than detention.”

Sarah Allen, prosecuting said both men were caught selling drugs on September 12.

She said: “Derby police received a number of complaints about drug dealing in Arboretum Park.

“They deployed officers there and seized CCTV as part of their operation. Analysis showed both defendants selling drugs to known users.

“One of them, who was sold drugs by Mr Mannion-Robertson, was in a wheelchair. Those users were stopped (shortly after the sales) and were found to be carrying both heroin and crack cocaine.”

Horrifying court cases

Mannion-Roberts, of Crompton Street, Derby, and Hussain, of no fixed address, pleaded guilty to possession with intent to supply both drugs and possession of small amounts of cannabis which were found on them during a search.

The younger man was sent to a young offender’s institution for four years while Hussain received a 14-month period of detention.

Steve Cobley, for Mannion-Robertson, said: “He expects custody and expects it to be of some length.”

Justin Ablott, for Hussain, said: “His family are astonished that he became involved in something like this. His involvement lasted just a matter of days.”